0-4-0+0-4-0

ex-Tasmanian Garratt K1 at Snowdon Ranger on the Welsh Highland Railway

In the Whyte notation for the classification of steam locomotives by wheel arrangement, the 0-4-0+0-4-0 is an articulated locomotive, usually of the Garratt type. The wheel arrangement is effectively two 0-4-0 locomotives operating back to back, with the boiler and cab suspended between the two power units. Each power unit has no leading wheels, four powered and coupled driving wheels on two axles, and no trailing wheels. A similar arrangement exists for Fairlie, Mallet and Meyer locomotives, but is referred to as 0-4-4-0.

Other equivalent classifications are:

UIC classification: B+B (also known as German and Italian classifications)
French classification: 020+020
Turkish classification: 22+22
Swiss classification: 2/2+2/2 up to the early 1920s, later 4/4

Overview

Industrial Beyer-Garratt William Francis

The first Garratt locomotive, K1, one of two 2 ft (610 mm) gauge Tasmanian Government Railways K Class locomotives built in 1909, has this wheel arrangement and has been restored to operating condition at the Welsh Highland Railway. This arrangement proved one of the less popular Garratt types, since most Garratt locomotives were larger and more powerful, requiring more pairs of driving wheels to operate within the normal axle load limits, and because leading wheels gave more stability and better tracking to allow faster speeds.^[1]

In total, 34 Garratts of this type were constructed, seven by Garratt patent holder Beyer, Peacock, mostly for industrial use, and 27 by other builders. The largest user of the type was the C.F. Vicinaux du Mayumbe in the Belgian Congo, with twenty locomotives built to a 600 mm (1 ft 11 ⁵⁄₈ in) gauge by St. Leonard in Belgium.^[1]^[2]

Usage

United Kingdom

In addition to K1 at the Welsh Highland Railway, the industrial Beyer-Garratt William Francis, built in 1937, is preserved at the Bressingham Steam Museum.

**0-4-0+0-4-0 Garratt production list – All manufacturers**^[1]^[2]^[3]^[4]
Gauge	Railway	Class	Works no.	Units	Year	Builder
0500 !500 mm	Southern Fuegian Railway, Argentina	"Engineer Porta"		1	1994	Argentina
0500 !500 mm	Southern Fuegian Railway, Argentina	"Engineer Zubieta"		1	2006	Girdlestone Rail, South Africa
0600 !600 mm	C.F.Vicinaux du Mayumbe, Zaïre	E	2096	1	1927	St. Leonard, Belgium
0600 !600 mm	C.F.Vicinaux du Mayumbe, Zaïre	A	1708-1709	2	1911	St. Leonard, Belgium
0600 !600 mm	C.F.Vicinaux du Mayumbe, Zaïre	A	1715-1716	2	1911	St. Leonard, Belgium
0600 !600 mm	C.F.Vicinaux du Mayumbe, Zaïre	B	1899-1900	2	1919	St. Leonard, Belgium
0600 !600 mm	C.F.Vicinaux du Mayumbe, Zaïre	B	1953-1956	4	1921	St. Leonard, Belgium
0600 !600 mm	C.F.Vicinaux du Mayumbe, Zaïre		2021-2025	5	1924	St. Leonard, Belgium
0600 !600 mm	C.F.Vicinaux du Mayumbe, Zaïre	C	2056-2059	4	1926	St. Leonard, Belgium
0610 !2 ft	Darjeeling Himalayan, India	D Class	5407	1	1910	Beyer, Peacock
0610 !2 ft	Tasmanian Government Railways	K	5292-5293	2	1909	Beyer, Peacock
0750 !750 mm	Mines du Zaccar, Algeria		1752	1	1936	Du Haine Saint-Pierre
0750 !750 mm	Mines du Zaccar, Algeria		1783	1	1937	Du Haine Saint-Pierre
0750 !750 mm	Mines du Zaccar, Algeria		1781	1	1912	St. Leonard, Belgium
1000 !1,000 mm	Porto Feliz Sugar Co., Brazil		2091	1	1927	St. Leonard, Belgium
1000 !1,000 mm	Piracicaba Sugar Co., Brazil		2108	1	1927	St. Leonard, Belgium
1435 !4 ft 8 ¹⁄₂ in	Vivian & Sons (British Copper/ICI)		6172	1	1924	Beyer, Peacock
1435 !4 ft 8 ¹⁄₂ in	Sneyd Colliery, Burslem		6729	1	1931	Beyer, Peacock
1435 !4 ft 8 ¹⁄₂ in	Guest, Keen & Baldwins		6779	1	1934	Beyer, Peacock
1435 !4 ft 8 ¹⁄₂ in	Baddesley Colliery, Atherstone		6841	1	1937	Beyer, Peacock

References

1 2 3 Hamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives produced by Beyer, Peacock, retrieved 10 November 2012
1 2 Hamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives from Other Builders, retrieved 10 November 2012
↑ The End of the World Train - Tierra del Fuego National Park - Engineer Porta
↑ The End of the World Train - Tierra del Fuego National Park - Engineer Zubieta

Wikimedia Commons has media related to 0-4-0+0-4-0 locomotives.

Steam locomotive wheel arrangements

Single engine types	0-2-2 0-2-4 2-2-0 2-2-2 2-2-4 4-2-0 4-2-2 4-2-4 6-2-0 0-3-0 0-4-0 0-4-2 0-4-4 0-4-6 2-4-0 2-4-2 2-4-4 2-4-6 4-4-0 4-4-2 4-4-4 4-4-6 0-6-0 0-6-2 0-6-4 2-6-0 2-6-2 2-6-4 2-6-6 4-6-0 4-6-2 4-6-4 0-8-0 0-8-2 0-8-4 2-8-0 2-8-2 2-8-4 2-8-6 4-8-0 4-8-2 4-8-4 4-8-6 6-8-6 0-10-0 0-10-2 2-10-0 2-10-2 2-10-4 4-10-0 4-10-2 0-12-0 2-12-0 2-12-2 2-12-4 4-12-2 4-14-4

Divided drive and Duplex engine types	0-2-2-0 2-2-2-0 2-2-2-2 2-2-4-0 4-2-2-0 2-4-6-2 4-4-4-4 6-4-4-6 4-4-6-4 4-6-4-4

Articulated locomotives Garratt and Meyer types	0-4-0+0-4-0 2-4-0+0-4-2 2-4-2+2-4-2 4-4-2+2-4-4 0-6-0+0-6-0 0-6-2+2-6-0 2-6-0+0-6-2 2-6-2+2-6-2 4-6-0+0-6-4 4-6-2+2-6-4 4-6-4+4-6-4 2-8-0+0-8-2 2-8-2+2-8-2 4-8-0+0-8-4 4-8-2+2-8-4 4-8-4+4-8-4

Articulated locomotives Fairlie and Mallet types (includes Triplex types)	0-4-4-0 0-4-4-2 2-4-4-0 2-4-4-2 0-6-6-0 2-6-6-0 2-6-6-2 2-6-6-4 2-6-6-6 2-6-8-0 4-6-6-2 4-6-6-4 0-8-6-0 0-8-8-0 2-8-8-0 2-8-8-2 2-8-8-4 4-8-8-2 4-8-8-4 2-10-10-2 2-8-8-8-2 2-8-8-8-4

Articulated locomotives Engerth types	0-4-4 0-4-6 2-6-2 0-6-4 0-6-4-0 0-8-4 0-8-6

Geared locomotives	Shay Climax Heisler Willamette

Other notation forms: AAR Swiss UIC

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